? media queries 亚博yao88手册 亚博yao88,狗亚app官方,新亚博优惠

语法:

@media { sRules }

取值:

指定设备名称。请参阅附录:设备类型
{sRules}:
样式表定义。

说明:

判断媒介(对象)类型来实现不同的展现。此特性让CSS可以更精确作用于不同的媒介类型,同一媒介的不同条件(分辨率、色数等等).

media_query: [only | not]?  [ and  ]*
expression: (  [: ]? )
media_type: all | aural | braille | handheld | print | projection | screen | tty | tv | embossed
media_feature: width | min-width | max-width 
  | height | min-height | max-height
  | device-width | min-device-width | max-device-width
  | device-height | min-device-height | max-device-height
  | device-aspect-ratio | min-device-aspect-ratio | max-device-aspect-ratio
  | color | min-color | max-color
  | color-index | min-color-index | max-color-index
  | monochrome | min-monochrome | max-monochrome 
  | resolution | min-resolution | max-resolution
  | scan | grid

兼容性:

类型 IEInternet Explorer FirefoxFirefox ChromeChrome OperaOpera SafariSafari
版本 (×)IE6 (×)Firefox 2.0 (√)Chrome 1.0.x (√)Opera 9.63 (√)Safari 3.1
(×)IE7 (×)Firefox 3.0 (√)Chrome 2.0.x (√)Safari 4
(×)IE8 (√)Firefox 3.5

示例:

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